All the above mentioned devices will support the new updated version of the OS except the Z10 STL100-1. However, this is not an official release of the update but brings about a number of changes and enhancements to the BB10 devices. The leaked build also brings a number of issues with it.

According to N4BB, the leaked OS 10.2.1.641 brings along an improved battery life because of the updated touch profile. The update also brings a lot of new sensor libraries. Accordingly, the new build has also updated translations, gyroscope support in camera, and an unlocked Android Runtime.

Also the lock screen settings can be found in their own category. New animations when checking and commenting on BBM group pictures can be found now. Not only that but the audio routing in music player works now and there is a fix for the BBM dark themes as well. One can also see an app monitor improvements as well and the pictures received in emails will now be in-line.

There are also improvements made to PIM services and libraries, enabled code analyzers and debug scripts, and fixes for advanced Wi-Fi.

BlackBerry OS 10.2.1.641 is also reportedly said to include enabled FM Radio and to allow for contacts to be copied to different backends.

Sadly, the leaked build comes with a series of drawbacks like the one that affects the handset's camera. With the build installed in your device, you won't be able to take pictures without using flash.

Apart from that, the Contacts app has issues with the updates tab and kills other PIM processes such as calendar when accessing that tab. The pinch touch gesture in hub is fixed, but turns off after a reboot. At the same time, Blackberry Protect also turns off after a reboot.